Search for resonant $WZ \rightarrow \ell\nu \ell^{\prime}\ell^{\prime}$ production in proton$-$proton collisions at $\mathbf{\sqrt{s} = 13}$ TeV with the ATLAS detector

The ATLAS collaboration
Aad, Georges , Abbott, Braden Keim , Abbott, D.C. , Abeling, Kira , Abidi, Haider , Aboulhorma, Asmaa , Abramowicz, Halina , Abreu, Henso , Abulaiti, Yiming , Abusleme Hoffman, A.C.
Eur.Phys.J.C 83 (2023) 633, 2023.

Abstract (data abstract)
A search for a WZ resonance, in the fully leptonic final state (electrons and muons), is performed using 139 fb^-1 of data collected at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The results are interpreted in terms of a singly-charged Higgs boson of the Georgi-Machacek model, produced by WZ-fusion, and of a Heavy Vector Triplet, with the resonance produced by WZ-fusion or the Drell-Yan process. No significant excess is observed over the Standard Model predictions and limits are set on the production cross-section times branching ratio as a function of the resonance mass for these processes.

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